Modelling the capacitance of the elongated plasma in tokamak
Abstract The capacitance model suitable for the non-circular cross-section plasma is studied based on the capacitance model of the circular cross-section plasma. The coaxial elliptic-torus capacitor property is further derived and used to determine the capacity of non-circular cross-section tokamak...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-45503-7 |
| _version_ | 1797398067568181248 |
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| author | Pengcheng Miao Ge Li Song Zhang Zhiyuan Weng Yu Wu Zemin Duan |
| author_facet | Pengcheng Miao Ge Li Song Zhang Zhiyuan Weng Yu Wu Zemin Duan |
| author_sort | Pengcheng Miao |
| collection | DOAJ |
| description | Abstract The capacitance model suitable for the non-circular cross-section plasma is studied based on the capacitance model of the circular cross-section plasma. The coaxial elliptic-torus capacitor property is further derived and used to determine the capacity of non-circular cross-section tokamak plasma, such as EAST (Experimental Advanced Superconducting Tokamak). By testing all the physical terms in this model, we find that the capacitance $$Cp$$ Cp ) is increasing exponentially with the increase of elongation ratio (k 2/k 1), while the minor radius ratio (a 2/a 1) is just reversed at the flat-top of plasma current, and the capacitance property is implicitly included in the H-mode study during the L–H transition. It is noted that C p-H mode is the least and C p-I mode is approximately equal to C p-L mode under the L-mode, I-mode and H-mode regimes based on this capacitance model in EAST. Consequently, it may be integrated into an equivalent circuit of the tokamak transformer or transport computer code of the edge plasma for use in precise simulations of fusion plasma behavior in the future, such as ITER (International Tokamak Experimental Reactor) or BEST (Burning-plasma Experimental Superconducting Tokamak) in China. |
| first_indexed | 2024-03-09T01:19:22Z |
| format | Article |
| id | doaj.art-3d5a5d9af3084857b1488761034073f6 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T01:19:22Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-3d5a5d9af3084857b1488761034073f62023-12-10T12:14:15ZengNature PortfolioScientific Reports2045-23222023-12-011311910.1038/s41598-023-45503-7Modelling the capacitance of the elongated plasma in tokamakPengcheng Miao0Ge Li1Song Zhang2Zhiyuan Weng3Yu Wu4Zemin Duan5Institute of Energy, Hefei Comprehensive National Science CenterInstitute of Plasma Physics, Chinese Academy of Sciences (ASIPP)Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP)School of Electrical and Optoelectronic Engineering, West Anhui UniversityInstitute of Energy, Hefei Comprehensive National Science CenterHefei Hangtai Electro Physics Co., LtdAbstract The capacitance model suitable for the non-circular cross-section plasma is studied based on the capacitance model of the circular cross-section plasma. The coaxial elliptic-torus capacitor property is further derived and used to determine the capacity of non-circular cross-section tokamak plasma, such as EAST (Experimental Advanced Superconducting Tokamak). By testing all the physical terms in this model, we find that the capacitance $$Cp$$ Cp ) is increasing exponentially with the increase of elongation ratio (k 2/k 1), while the minor radius ratio (a 2/a 1) is just reversed at the flat-top of plasma current, and the capacitance property is implicitly included in the H-mode study during the L–H transition. It is noted that C p-H mode is the least and C p-I mode is approximately equal to C p-L mode under the L-mode, I-mode and H-mode regimes based on this capacitance model in EAST. Consequently, it may be integrated into an equivalent circuit of the tokamak transformer or transport computer code of the edge plasma for use in precise simulations of fusion plasma behavior in the future, such as ITER (International Tokamak Experimental Reactor) or BEST (Burning-plasma Experimental Superconducting Tokamak) in China.https://doi.org/10.1038/s41598-023-45503-7 |
| spellingShingle | Pengcheng Miao Ge Li Song Zhang Zhiyuan Weng Yu Wu Zemin Duan Modelling the capacitance of the elongated plasma in tokamak Scientific Reports |
| title | Modelling the capacitance of the elongated plasma in tokamak |
| title_full | Modelling the capacitance of the elongated plasma in tokamak |
| title_fullStr | Modelling the capacitance of the elongated plasma in tokamak |
| title_full_unstemmed | Modelling the capacitance of the elongated plasma in tokamak |
| title_short | Modelling the capacitance of the elongated plasma in tokamak |
| title_sort | modelling the capacitance of the elongated plasma in tokamak |
| url | https://doi.org/10.1038/s41598-023-45503-7 |
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